O Desafio
Em sistemas de mineração, os inversores evoluíram de “equipamento opcional” a “equipamento essencial”. Sua aplicação não apenas resolve os problemas de “alto consumo, alto desgaste e baixa eficiência” dos acionamentos diretos da rede, como é pilar central da transformação inteligente das minas. // No futuro, com o avanço contínuo da tecnologia à prova de explosão, da IoT e dos algoritmos de economia de energia, os inversores integrar-se-ão profundamente ao sistema de “minas sem pessoas e gestão inteligente”, dando suporte técnico crucial para uma produção “segura, eficiente e verde”.
A Solução
The main underground ventilator in coal mines is a core auxiliary equipment for ensuring underground air quality and diluting gas concentration, which requires 24-hour continuous operation. Traditional power-frequency drives have pain points such as "high energy consumption for air volume adjustment (air door throttling loss reaches 30%-50%), large starting impact (inrush current is 5-7 times the rated value), and slow gas linkage response". For this scenario, inverter application solution takes "safety and explosion prevention as the premise, on-demand air supply for energy conservation as the core, and intelligent linkage to ensure safety" as its goals, so as to achieve efficient and safe operation of the ventilator. The basic plan is as follows:
inverter selection: Focus on explosion prevention and stability, and select flameproof vector control inverters.
Control logic: Dynamic speed regulation with gas linkage, which is deeply linked with the underground gas monitoring system and PLC control cabinet to build a "gas concentration - air volume" closed-loop control.
Installation and protection: Adapt to the harsh underground environment to avoid causing safety risks.